Stovepipe-joint.



WITNESSES .ZMUC -B) BATENTED DEC. 10, 1907.

H. S. BLOOD. STOVEPIPE JOINT.

APPLICATION FILED JAN. 24. 1907.

mm/r05 HENRY 5-15m: Em-

HENRY S BLOOD, OF BOTTINEAU, NORTH DAKOTA.

STOVE PIPE-JOINT.

Specification of Letters Patent.

Patented Dec. 10, 1907.

Application filed JanuaryiZl, 1907. Serial No. 353.806.

T 0 all whom it may concern:

Be it known that I, HENRY S. BLooD, a citizen of the United States, anda resident of Bottineau, in the county of Bottineau and State of NorthDakota, have invented certain new and useful Improvements inStovepipe-Joints, of which the following is a specification.

My invention is an improvement in joints for stove pipes and otherpipes, and particularly in the means for connecting the adjoiningsections thereof; and the invention consists in certain novelconstructions and combinations of parts as will be hereinafter describedand claimed.

In the drawing Figure 1 is a side view of a stove pipe joint embodyingmy invention, the flap being closed. Fig. 2 is a similar view the flapbeing open to expose the ends of the fastening key. Fig. 3 is across-section on about line 33 of Fig. 1, the flap being closed in fulllines and indicated in dotted lines as open. Figs. 4 and 5 are sideviews illustrating the meeting ends of the pipe sections detached.

In carrying out the invention I construct the meeting ends of the pipesections A and B to fit one over the other that is to say, the pipe Afits at one end over the meeting end of the pipe B so that forconvenience of reference I may refer to these ends as the outer andinner sections. Manifestly, in practice the pipes may be made at one endto fit over a meeting section and at the other end to fit in the nextmeeting -section, so the pipe sections may be interchangeably used, asdesired. The section B is provided a short distance from its end B withan annular groove A in its outer face and a short distance back of suchgroove A with an annular bead B forming a stop for the section A whenthe parts are telescoped as shown in Fig. 1. The

section A fits at its end over the meeting end I of the section B andabuts at its extremity the bead B and is provided in its inner face withan annular groove A which registers with the groove B in the section B.By preference the grooves A and B are secured by beading the pipecircumferentially which may be effected by the tools usually used forsuch purpose by tinsmiths.

The bead A is provided adjacent to the seam a with an opening C and witha flap C which may be set as shown in Fig. 1 to close the opening C ormay be opened as shown in Fig. 2 and indicated in dotted lines Fig. 3 touncover the opening O and expose the ends of a key D which is fittedwithin the annular channel afforded jointly by the grooves A and B Thiskey D may be inserted through the opening C when the sections 'A and Bare arranged as shown in Figs. 1 and 2 and when inserted at one end inthe opening O and forced around through the channel it will finally beadjusted until its ends are arranged adjacent to each other and oppositethe opening 0 so access may be had thereto by a pair of pliers for thepurpose of removing the key when it is desired to separate the pipesections.

It will be noticed that the channel formed by the beads A and B iscontinuous and that the key D is of a length approximately equal to thecircumference of the pipe sections so that I am able to avoid the use ofany stop projections on the key to limit the extent to which it may beforced into the cl1annel,and there is at all times the end or someportion of the key opposite the opening C so it may be reached by a pairof pliers for manipulating the key when placed in the channel in case itshould be desired to remove the key for separating the pipe sections.When the key has been introduced the flap C may be pressed back from theposition shown in Fig. 2 to that shown in Fig. 1 in which it will coverthe opening O in order to avoid any unusual appearance in the stovepipe. It will be noticed that the key forms a connection between thepipe sections throughout their circumference and by thus securing thecontinuous locking or connection between the parts, avoids any danger ofdisconnection or breakage of the pipe sections because of unusual strainin any direction.

While the invention is especially designed for use on stove pipes itmanifestly may be employed on other pipes without departing from thebroad principles of my invention.

The key is preferably a length of suitable wire of brass, copper or thelike not easily corroded.

What I claim is 1. The improvement in pipe joints herein describedcomprising the outer section and the inner section fitted at one endwithin the adjacent end of the outer section, said inner section havinga bead forming an abutment and stop for the end of the outer section andthe telescoped portion of the inner and outer sections being providedwith annular beads that on the inner section forming an annular groovein its outer side and that on the outer section forming an annulargroove on its inner side registering with the annular groove on theinner section, and the outer bead having an opening and a flap forclosing the same, and a key introduced through said opening and made ofa length approximately equal to the circumference of the pipe sectionswhereby the said key may encircle the inner pipe section Within thechannel formed by the grooves therein and in the outer section and haveboth its ends arranged op posite the opening in the outer bead,substantially as and for the purposes set forth.

2. A pipe joint composed of sections telescoped at their meeting endsand provided in their telescoped portions With coinciding grooves, thatin the inner section being in its outer face and that of the outersection in its inner face and extending uninterruptedly around the jointwhereby the said grooves combine to form a continuous channel around theinner pipe section, an opening being provided leading into the outergroove and a flap for closing said opening, substantially as set forth.

3. A pipe j oint comprising the telescoping sections, the inner onehaving in its outer facean annular groove and the outer one having inits inner face an annular groove coinciding With that in the innersection, an opening being provided leading to the groove in the outersection and a key Within the channel formed by the said groove and eX-tending entirely around the inner section and having its opposite endsarranged in close proximity opposite the opening leading to the channel,substantially as and for the purposes set forth.

HENRY S. BLOOD. Witnesses:

SoLoN C. KEMoN, PERRY B. TURPIN.

